Prenatal factors affecting the probability of survival between birth and weaning in rabbits

IF 0.8 4区农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE

World Rabbit Science Pub Date : 2023-03-31 DOI:10.4995/wrs.2023.18268

R. Belabbas, Rym Ezzeroug, M. García, A. Berbar, G. Zitouni, Djamel Taalaziza, Zoulikha Boudjella, Nassima Boudahdir, Samir Dis, M. Argente

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Abstract

The aim of this study was to analyse the relationships between kit birth weight and litter size with kit survival from birth to weaning, and to estimate the effects of place of birth, nest quality, cannibalism, lactation, parity order, season and sex. A total of 1696 kits from 82 females of the ITLEV2006 synthetic line were used in this study. A logistic regression was performed. Kit birth weight was directly related to the probability of the kit’s survival from birth to weaning, and increasing birth weight by one gram increased the likelihood of kit survival by 8% to 10% (P<0.001). In line with the decrease in birth weight of kits as the number of kits at birth increases, litter size showed a negative relationship to the probability of survival from birth to weaning, and increasing the litter by one kit at birth decreased the probability of survival of the kits by 5% to 9% (P<0.05). Regarding effects, cannibalism events in the litter decreased the probability of survival of the kits in the first week of life (P<0.01). Being born in the cage decreased the probability of survival of the kits from birth to weaning, and kits born outside the nest had a lower chance of survival than those born inside the nest (P<0.01). The order of parturition had a positive effect on probability of survival of the kits from 5 days of age to weaning (P<0.05). Female kits had a lower chance of survival than male kits, but only until 5 days of age (P<0.01). The lactation status displayed a negative effect on the probability of survival of the kits in the first week of life, and kits gestated in lactating females had a lower chance of survival than those gestated in non-lactating females (P<0.05). In conclusion, the probability of kit survival in the first days after parturition was affected mainly by its weight at birth, litter size, cannibalism events, place of birth of kit, parity order, sex and lactation status, while the probability of kit survival at weaning was directly related to its weight at birth, litter size, place of birth of kit and parity order.

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影响家兔出生至断奶存活率的产前因素

本研究的目的是分析雏鸟出生体重和窝产仔数与雏鸟从出生到断奶存活率之间的关系，并估计出生地点、巢质量、同类相食、哺乳、胎次顺序、季节和性别对雏鸟存活率的影响。本研究使用ITLEV2006合成系82只雌性的1696只试剂盒。进行逻辑回归。试剂盒的出生重量与试剂盒从出生到断奶的存活率直接相关，每增加1克的出生重量可使试剂盒存活率提高8% ~ 10% (P<0.001)。随着雏鸡出生数的增加，雏鸡的出生重呈下降趋势，窝产仔数与雏鸡从出生到断奶的存活率呈负相关关系，每增加1窝产仔数，雏鸡的存活率降低5% ~ 9% (P<0.05)。在影响方面，窝内同类相食事件降低了幼崽出生后第一周的存活率(P<0.01)。笼内出生降低了雏鸡从出生到断奶的存活率，且巢外出生的雏鸡存活率低于巢内出生的雏鸡(P<0.01)。分娩顺序对雏鸡5日龄至断奶的成活率有正向影响(P<0.05)。雌雏鸡的存活率低于雄雏鸡，但仅维持到5日龄(P<0.01)。泌乳状态对雏鸡出生第1周的成活率有负相关影响，泌乳母鼠的成活率低于非泌乳母鼠(P<0.05)。综上所述，出生时体重、产仔数、同类相食事件、出生地、胎次、性别和泌乳情况对雏鸡出生后第1天的存活率有重要影响，而断奶时的存活率则与出生时体重、产仔数、出生地和胎次顺序有直接关系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

World Rabbit Science 农林科学-奶制品与动物科学

CiteScore

1.70

自引率

25.00%

发文量

审稿时长

>36 weeks

期刊介绍： World Rabbit Science is the official journal of the World Rabbit Science Association (WRSA). One of the main objectives of the WRSA is to encourage communication and collaboration among individuals and organisations associated with rabbit production and rabbit science in general. Subject areas include breeding, genetics, production, management, environment, health, nutrition, physiology, reproduction, behaviour, welfare, immunology, molecular biology, metabolism, processing and products. World Rabbit Science is the only international peer-reviewed journal included in the ISI Thomson list dedicated to publish original research in the field of rabbit science. Papers or reviews of the literature submitted to World Rabbit Science must not have been published previously in an international refereed scientific journal. Previous presentations at a scientific meeting, field day reports or similar documents can be published in World Rabbit Science, but they will be also subjected to the peer-review process. World Rabbit Science will publish papers of international relevance including original research articles, descriptions of novel techniques, contemporaryreviews and meta-analyses. Short communications will only accepted in special cases where, in the Editor''s judgement, the contents are exceptionally exciting, novel or timely. Proceedings of rabbit scientific meetings and conference reports will be considered for special issues. World Rabbit Science is published in English four times a year in a single volume. Authors may publish in World Rabbit Science regardless of the membership in the World Rabbit Science Association, even if joining the WRSA is encouraged. Views expressed in papers published in World Rabbit Science represent the opinion of the author(s) and do not necessarily reflect the official policy of the WRSA or the Editor-in-Chief.